Patent 10501583 was granted and assigned to LG Chem on December, 2019 by the United States Patent and Trademark Office.
The present invention relates to a method for preparing a polyhedral oligomer silsesquioxane. The preparation method includes the step of reacting a reaction mixture containing at least two types of silane compounds and a tetraalkylammonium hydroxide having 2 to 5 carbon atoms at a temperature of 5° C. or below.